DRV8809中文资料具有直流/直流转换器的组合电机驱动器数据手册TI规格书

描述 Description

The DRV8809/DRV8810 provides an integrated motor driver solution. The chip has four H-bridges internally and is configurable to eight different modes of combination motor driver control.

The output driver block for each H-bridge consists of N-channel power MOSFETs configured as full H-bridges to drive the motor windings. The stepper motor control has a 16-step mode programmable through the 3-wire serial interface (SPI). The SPI input pins are 3.3-V compatible and 5-V tolerant.

The DRV8809/DRV8810 has three DC-DC switch-mode buck converters to generate a programmable output voltage from 1.5 V to 80% of VDIN (channel A) or up to 10 V (for channel B and channel C), with up to 1.5-A load current capability. The outputs are selected using the C_SELECT terminal at start-up or using serial interface during operation.

An internal shutdown function is provided for overcurrent protection (OCP), short-circuit protection, overvoltage/undervoltage lockout (UVLO), and thermal shutdown (TSD). Also, the device has a reset function that operates at power on and at input to the In-Reset pin.

特性 Features

• Configurable to Eight Modes of Combination Motor Driver
• Bipolar Stepper Motor Driver
• 16-Step Current-Mode Control
• 800-mA Average Output Current as Stepper Motor Drive

• DC Motor Driver
• 800-mA Maximum Continuous Current and 8-A/500-ns or 3-A/100-ms Peak Current for Each DC Motor Drive

• Low ON resistance Rds(ON) = 0.55 Ω at TJ = 25°C (Typ)

• Three Integrated DC-DC Converters
• On/Off Selectable Using C_SELECT Pin and Serial Interface
• Outputs Programmable With External Resistor Network From 1.5 V to VDIN × 0.8
• 1.5-A Output Capability for All Three Channels

• 7-V to 40-V Operating Voltage Range for DC-DC Converters
• Two Serial Interfaces for Communications
• Thermally Enhanced Surface-Mount 64-Pin QFP PowerPAD™ Package (Eco-Friendly – RoHS and No Sb/Br)
• Power-Down Function (Deep-Sleep Mode)
• Reset Signal Output (Active Low)
• Reset (All Clear) Control Input